Earlier quoted context omitted.
There are a lot of little typos (such as stating '..' and '-' arguments for 'cd' labeled as "previous directory" or suggesting Ubuntu uses Debian because it's made by Canonical). I wonder the best way to contact the author about revising these small but obviously not terrible errors.
There's a "Contact Us" section in the footer that points to - contact@linuxjourney.com
https://www.reddit.com/r/linux/comments/4m4mko/i_made_a_site...